<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2007 PHPExcel, Maarten Balliauw
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * @category   PHPExcel
 * @package    PHPExcel_Cell
 * @copyright  Copyright (c) 2006 - 2007 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/gpl.txt	GPL
 */


/**
 * PHPExcel_Cell_DataType
 *
 * @category   PHPExcel
 * @package    PHPExcel_Cell
 * @copyright  Copyright (c) 2006 - 2007 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Cell_DataType
{
	/* Data types */
	const TYPE_STRING		= 's';
	const TYPE_FORMULA		= 'f';
	const TYPE_NUMERIC		= 'n';
	const TYPE_BOOL			= 'b';
    const TYPE_NULL			= 's';
    
	/**
	 * DataType for value
	 *
	 * @param mixed $pValue
	 * @return int
	 */	
	public static function dataTypeForValue($pValue = null) {
		// Match the value against a few data types
		if (is_null($pValue)) {
			return PHPExcel_Cell_DataType::TYPE_NULL;
		} elseif (substr($pValue, 0, 1) == '=') {
			return PHPExcel_Cell_DataType::TYPE_FORMULA;
		} elseif (is_bool($pValue)) {
			return PHPExcel_Cell_DataType::TYPE_BOOL;
		} elseif (is_numeric($pValue)) {
			return PHPExcel_Cell_DataType::TYPE_NUMERIC;
		} else {
			return PHPExcel_Cell_DataType::TYPE_STRING;
		}
	}
}
